[ease] Async downloading of media, with progress dialog.

[Nate Stedman <natesm src gnome org>]

commit bf4a2ed417635ab4a086d789e8b5a2010161473e
Author: Nate Stedman <natesm gmail com>
Date:   Mon Aug 23 00:03:45 2010 -0400

    Async downloading of media, with progress dialog.

 ease/ease-import-dialog.vala |   55 ++++++++++++++++++++++++++++++-----------
 ease/ease-import-widget.vala |    6 +++-
 2 files changed, 44 insertions(+), 17 deletions(-)
---
diff --git a/ease/ease-import-dialog.vala b/ease/ease-import-dialog.vala
index 5d8683d..b7d5400 100644
--- a/ease/ease-import-dialog.vala
+++ b/ease/ease-import-dialog.vala
@@ -53,21 +53,11 @@ internal class Ease.ImportDialog : Gtk.Window
 		var item = new Source.SpinnerItem.from_stock_icon(title, stock_id,
 		                                                  widget);
 		
-		widget.add_media.connect((media) => {
-			var temp = Temp.request();
-			
-			var file = File.new_for_uri(media.file_link);
-			var copy = File.new_for_path(Path.build_filename(temp, "media"));
-			try
-			{
-				file.copy(copy, FileCopyFlags.OVERWRITE, null, null);
-				add_image(copy.get_path());
-			}
-			catch (Error e)
-			{
-				critical("Couldn't read file: %s", e.message);
-				return;
-			}
+		widget.add_media.connect((media_list) => {
+			var progress = new Dialog.Progress(_("Downloading Media Files"),
+			                                   false, media_list.size, this); 
+			progress.show();
+			add_media_recursive(progress, media_list, Temp.request(), 0);
 		});
 		
 		service.started.connect(() => item.start());
@@ -76,4 +66,39 @@ internal class Ease.ImportDialog : Gtk.Window
 		
 		return item;
 	}
+	
+	private void add_media_recursive(Dialog.Progress progress,
+	                                 Gee.Queue<Plugin.ImportMedia> media_list,
+	                                 string temp, int i)
+	{
+		if (media_list.size == 0)
+		{
+			progress.destroy();
+			return;
+		}
+		
+		var file = File.new_for_uri(media_list.poll().file_link);
+		var copy = File.new_for_path(Path.build_filename(temp,
+		                                                 "media" +
+		                                                 (i++).to_string()));
+		try
+		{
+			double previous = 0;
+			file.copy_async(copy, FileCopyFlags.OVERWRITE,
+			                Priority.DEFAULT, null,
+			                (current, total) => {
+				progress.add(((double)current - previous) / (double)total);
+				previous += current - previous;
+			},
+			                (sender, result) => {
+				add_image(copy.get_path());
+				add_media_recursive(progress, media_list, temp, i);
+			});
+		}
+		catch (Error e)
+		{
+			critical("Couldn't read file: %s", e.message);
+			return;
+		}
+	}
 }
diff --git a/ease/ease-import-widget.vala b/ease/ease-import-widget.vala
index 9ea3785..1bfa355 100644
--- a/ease/ease-import-widget.vala
+++ b/ease/ease-import-widget.vala
@@ -56,7 +56,7 @@ internal class Ease.ImportWidget : Gtk.Alignment
 	/**
 	 * Triggers a media add.
 	 */
-	internal signal void add_media(Plugin.ImportMedia media);
+	internal signal void add_media(Gee.Queue<Plugin.ImportMedia> media_list);
 	
 	/**
 	 * Size of the spinner
@@ -102,12 +102,14 @@ internal class Ease.ImportWidget : Gtk.Alignment
 			var model = icons.model;
 			Gtk.TreeIter iter = Gtk.TreeIter();
 			Plugin.ImportMedia media = null;
+			var list = new Gee.LinkedList<Plugin.ImportMedia>();
 			icons.selected_foreach((view, path) => {
 				model.get_iter(out iter, path);
 				model.get(iter, Plugin.ImportService.Column.IMPORT_MEDIA,
 				          out media);
-				add_media(media);
+				list.add(media);
 			});
+			add_media(list);
 		});
 		insert.expose_event.connect(set_bg);